The Ford Barn - View Single Post - max overbore for a '39-'42 flathead

37 truck · 10-14-2012, 11:23 AM

Sponsored Links (Register now to hide all advertisements)

I had my 1940 221 which was bored .125 when I got it bored to .145, or .020 over stock 239. It cleanup fine. It now is 3.2075.

10-14-2012, 11:23 AM	#5
37 truck Senior Member Join Date: Jul 2011 Location: Omak, Washington Posts: 207	Re: max overbore for a '39-'42 flathead Sponsored Links (Register now to hide all advertisements) I had my 1940 221 which was bored .125 when I got it bored to .145, or .020 over stock 239. It cleanup fine. It now is 3.2075.